The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a major space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength (orange-red) visible light, through near-infrared to the mid-infrared (0.6 to 27 micrometers), and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. While Hubble has a -meter () mirror, the JWST features a larger and segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below K () .
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| - The James Webb Space Telescope (JWST), previously known as Next Generation Space Telescope (NGST), is a major space observatory under construction and scheduled to launch in October 2018. The JWST will offer unprecedented resolution and sensitivity from long-wavelength (orange-red) visible light, through near-infrared to the mid-infrared (0.6 to 27 micrometers), and is a successor instrument to the Hubble Space Telescope and the Spitzer Space Telescope. While Hubble has a -meter () mirror, the JWST features a larger and segmented 6.5-meter (21 ft) diameter primary mirror and will be located near the Earth–Sun L2 point. A large sunshield will keep its mirror and four science instruments below K () .
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| Name
| - James Webb Space Telescope
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| Caption
| - Mirror segment after being coated with gold
- Primary mirror segments made of beryllium
- Mirror segments undergoing cryogenic tests at the X-ray & Cryogenic Facility at Marshall Space Flight Center
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| - Full scale James Webb Space Telescope model at South by Southwest in Austin
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| Image
| - James Webb Space Telescope Mirror33.jpg
- James Webb Space Telescope Mirror37.jpg
- James Webb Space Telescope Mirror38.jpg
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| - Next Generation Space Telescope
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